C. Helium is a monoatomic gas at STP.
Neon
Hydrogen, nitrogen, oxygen, fluorine and chlorine are gases at room temperature; iodine is a solid, bromine is a liquid.
Only fluorine and chlorine are gases at room temperature. Bromins is a liquid. Iodine and astatine are solids.
All elements become gasses when their boiling point (temperature) is reached.
Hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, bromine, krypton, xenon and radon are all gases at 100 deg C. Only Bromine will condense if cooled to room temperature.
YES, very similar properties. Both Fluorine and Chlorine are in Group (or Family) 17. Fluorine is in Period 2 and Chlorine is Period 3
in number order it goes hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon, and radon. Hydrogen, nitrogen, oxygen, fluorine, and chlorine are diatomic gases. Helium, neon, argon, krypton, xenon, and radon are monatomic gases.
Chlorine Fluorine Nitrogen Oxygen
Hydrogen, nitrogen, oxygen, fluorine and chlorine are gases at room temperature; iodine is a solid, bromine is a liquid.
All of the noble gases, hydrogen, nitrogen, oxygen, fluorine, and chlorine.
All the gases except the Noble(Inert) gases, which are monatomic.
Hydrogen Nitrogen Oxygen Fluorine Chlorine Helium Neon Argon Krypton Xenon Radon
There are 11 elements that are a gas at room temperature. Here is a list... Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Helium, Neon, Argon, Krypton, Xenon, Radon.
Nitrogen is not a halogen. The halogens are fluorine, chlorine, bromine, iodine, and astatine.
Fluorine and chlorine are the gases in the fluorine family, at standard temperature and pressure.
Yes, fluorine does form monatomic anions with formula F-1.
Oxygen
Hydrogen, nitrogen, oxygen, fluorine, chlorine, and all the noble gases exist as a gas at standard temperature and pressure.